My very dear one,
Thank you for your kind, short letter, I appreciate your concern. It’s very good that you are thinking to do retreat.

In my observation, it is good for you to do Mahamudra retreat with preliminaries. So, in the morning do Lama Chöpa and spend time during that session doing mandala offerings and prostrations. The preliminaries can even be started now, if you have time. After the morning session of Lama Chöpa, you can do Lama Tsongkhapa Guru Yoga in the other sessions. In the evening, do the King of Prayers, Vajrasattva practice and the protector prayers.

This is my advice and a very good opportunity for you.

With much love and prayer...